Red Flashing light on Walkera GA009 charger

[Tristam Thomas]

Hey guys,

thanks ahead for any advice you can give.

Here's the problem: trying to charge Ripmax 4s 14.8v 1600mah 45c batteries on Walkera GA009 charger. I bought three of them and one charges fine, but the other two, when I plug them into the charger the LED just flashes constantly. It says in the manual that the light should go just solid red until the battery's charged then it will go green (this happens with one battery), but with two of them, its just flashes red. PLEASE HELP. does anyone know what this means? I know it's not the charger. Is it the batteries? is this common? whats going on?

Many thanks

 

[Jackson]

Have you checked the voltage of the individual cells? One may be much lower that the others.

 

[Tristam Thomas]

Thanks, Jackson,

How would I actually go about doing that?

This is a pic of the exact battery, am I missing something about individual cells?

 

[Jackson]

From your pic putting the probes on the 2 end contacts (red and black) will give you the total pack voltage.